Home / 18,680.77-25,783.29-11,131.52

Finding the Fourth Proportional to 18,680.77, 25,783.29 and 11,131.52

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Solution

The fourth proportional to 18,680.77, 25,783.29 and 11,131.52 is: 15,363.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.77 : 25,783.29 = 11,131.52 : x
  2. Step 2: Convert to fraction form
    18,680.77/25,783.29 = 11,131.52/x
  3. Step 3: Cross multiply
    18,680.77x = 25,783.29 × 11,131.52
  4. Step 4: Simplify right side
    18,680.77x = 287,007,152.64
  5. Step 5: Solve for x
    x = 287,007,152.64/18,680.77
  6. Step 6: Final answer
    x = 15,363.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.